Dump-wagon.



No. 87?,884. PATENTED M23128, 1908. W. L. COLLINS.

DUMP WAGON. APPLICATION FILED JULY29, 1907 2 SHEETSSHEET 1.

MS Km sags,

'PATEMBD JAN. 28. 1908.

QM N Tl L L O G L DUMP WAGON.

APPLICATION FILED JULY29,1907.

2 SHEETSSHEET 2.

ster 6 and front end of the box, said'box consisting in this instance of front and rear ends -11 and -12 sheet metal side pieces 13-- and laterally swinging bottom sheet metal doors -14 and 14.

The ends -11 and -'12 are secured by angle irons 15- to the side bars 1 of the main supportin frame and are capped by metal bars 1 6- aving their ends overturned or clenched at -'17 upon the outturned flanges of the angle irons whereby the side bars 1-. are firmly drawn ,andjheld against adjacent edges of the ends 11 and 12-: These end pieces '1 1 and '12 extend a considerable distance below the horizontalplane of the bars 1 and their bottom and side edges below the ,bars -1' are preferably circular orcurved as best seen in Figs. 4 to 6 inclusive, the lateral or transverse width of the portions of the end pieces 'directly below the side pieces -1.; being' greater than that betweensaid side pieces and therefore their 0p osite side edges are swelled laterally beyon the vertical planes of the side bars 1' and then curved downwardly and [inwardly toward each other to conform to the downwardly flar- ,ing side pieces -13-- which are also bulged or swelled outwardly below the horizontal lane ofthe side pieces -1 so as to aford ample clearance for the load in theact of discharging the same. That is, as soon as the load begins to discharge by its own gravity, the fact that the sides -13- flare downwardly and outwardly from each other permits'the, full load to discharge at once by relieving the friction betweensuch load and the .S1deS- 13--." I

The combined vertical width of the side bars ',-1 and sheet metal sides '.13.. is

' considerably le'ss'than the vertical depth of the'endsj11'- and 12 leaving a clear open space between the lower edges of the sidepieces 13 about equal to the transver's'e"width of the ends 1 1' and 12,-

- for the discharge ofthe load, when the doors I are nearl identical in construction and consist'of s eetmetal segments or quadrants having a. combined'arc length substantially equal to the length of the are between the lower edges of the side ieces 13, measured around the curve lower edges/of the end pieces -11-'an(l -12- against which the opposite ends of the doors .-14 and 14+' are ada ted" to abut when" closed.

In other words t e curvature of the doors is substantially the same as that of the lower edges of the ends of the box so as to fit closely thereagainst and prevent any leakage atthe joints when the doors are shut but in order tov prevent such leakage the opposite ends of each door is provided with up-turned flanges -20 'lappi against the front and. rear faces of the en s '-11 and -12 Thesefront an 1 swyssa doors are pivoted at their opposite ends upon separate pairs ofpivotal p1ns 22- on the end pieces -11- and -12 in a plane some distance above the lower edges of the side pieces --13 but at opposite sides of the longitudinal center of the box as best seen in Figs. 4 and 5, so as to cause the meeting edges of the doors to swing clear of the ends when opening to discharge the load. By

pivoting these doors as just described on sep- 'arate pivots at opposite sides of the'lon i a center of the box, the portion of t e tudin load at the opposite side of the vertical plane of the pivots will tend to close the doors thereby relieving the strain upon the locking some support for 'the upper edges of the doors and transmitting part of .the strain ofthe load to the side pieces .l3'.

the lower edges In order to prevent lateral bulging or y s reading of the upper edges of .the doors and aso to keep said doors in pro er position while being 0 ened and close ,I provide each side of t e box with one or more, in this instance three, guide rods 27 and at the outside of the side pieces 13 and extending from the flanges 25 to the side pieces 1, the flanges +26 on the upper edges of the doors being rovided with apertures for receiving said gui e rods-27. It is now clear that an lateral strain upon the up er edges of the oorsistransmitted to the si, e pieces 13 through the medium of the connection between'the flanges 26- and guide rods 27, which latter are curved or concentric with the swinging axes of the door.

As bestseen in Figs. stand 5 the ends" of y the doors are disposed 'in vertical planes-at substantially right angles to the bottom and extend icllpward-ly at the outer sides. of the;

front andrear ends of the 'door.14- being provided with crank arms '28 and .-29"

at the side of the swinging axis opposite rear ends of'the box and are pivoted at 22 as previously'described, thethat to which the bottoms roper are secured while the rear end' of. tie. o posite door preferably on the meeting edge of the rear,

end of the door, the latter'orank arm being connected by a link -31 to the crank arm 29 which link plays between the pivots sweet .of the door as the latter are opened and closed and operates to transmit motion from one door to the other. I

A rock shaft 32 is journaled in suitable bearings -33 on one of the side bars -1 and is provided at its front end with a crank. hand piece 34 whereby the shaft may be rocked in its bearing.

' The rear end of this shaft'is provided with an additional crank arm 35 ,which is. 'pivotally connected to one end of a link '36- having its opposite end pivotally connected with a lost motion to the arm 28- of the door 14, said link having an elongated slot 37-- to receive the pivotal pin as.-38 and allow a limited lengthwise movement of the link when the shaft 33 is operated'in one direction to unlock the meeting edges of the doors slightly in advance of the opening of the same.

Asshown in Figs. 2 to 5 inclusive, this locking mechanism comprises a rock shaft 39 journaledupon and extending length wise of the under side of the'door -1i and is provided with a series of in this instance three. loops '4() extending laterally from the opposite or upper end of said link being y connected to the lower end of the ivota ink -36 as best seen in Fig. 4.

The lower end of the link 43 is provided with an elongated slot'45- for-receiving the piyotal pin as -,46. and estab-.

lishing a slight lost motioii between the link 43 and crank arnr42 to permit the doors to be swungto their extreme open position and still leave the locking members -0' in operative position.

When the doors are in their closed position the pivotal pin 38 is engaged with the lower end of the slot 37- on the link -36 and the pivotal in .46 is engaged with the upper end of t e slot 45 so that whengthe shaft 32- is rocked to open the bottom doors, the locking members --4() 4 will first be thrown out of operative position at which time the upper end of the-slot -37 engages the in -38 of the crank arm 28 and. by the continued-moven'ient -of the rock shaft 32 the doors will be positively forced open assisted by the weight.

of the load thereon, that is, the door -14n will be opened by the link .36- while the other door 14- will be simultaneously opened through the medium of the link 31 at the rear end'of the box..

The locking members are held in their operative position by a spring --48- which has one end connected to the rear end of the door -14 and its other end connected to a crank arm 49 on the rear end of the rock shaft 39 as best seen in Fig. 5.

In Fig. 9 I have shown a modified form of, locking device somewhat similar to that shown in Figs. 4 and 5 and consisting of a rock-shaft -39- having one or more hookshape lingers -50 provided on their free ends with rollers 51- adapted to interlock with a lengthwise'flange '52- on the door opposite to that upon which the shaft 39 is journaled, both of the doors being, in this preferably angle irons extending lengthwise meeting edges of the doors. 7

In Figs. 2 and 3 I have shown the bottom doors as provided with additional reinforcing straps or braces 53 extending diagonally from corner to corner in intersecting planes thereby enabling me to use comparatively light sheet metal for the doors andat the same time bra'cingsaid doors against torsional strains.

from their closed position and are always in a plane above the plane of the front axle and w ien in the lane of the rear axle so that after the load is discharged the doors will readily clearit when the vehicle is drawn away.

What I claimv is: v

1. In a dump wagon, a dump box having laterally swinging bottom doors curved trans'- versely-and provided with end pieces pivoted to the ends of the box at op osite sides of the longituidnal centerof said box, means for opening and closing the doors, and additional -means brought into action by the door operating means for locking the doors in their closed position.

2. In a dump wagon, a box having laterally swinging bottom doors inclining outwardly and upwardly from their meeting edgesand provided with end pieces extending' some distance upwardly from the bottom and pivotally connected to the front and rear ends of the box at opposite sides of the longitudinal center of said box, means for locking the doors in their closed position,

further, means for opening and closing the doors, and connections between the door operating means and locking means whereby the doors are unlocked by the operation of the door operating means to open the doors.

3. in a dump wagon, a diunp'box having laterally swinging bottom doors provided with up-turned end pieces pivoted at the opposite ends. and each on oppositesides of the longitudinal center of the box, a rock-shaft journaled on the box, alink eccentrically instance, provided with lengthwise flangesthereof and serving to reinforce or stiffen the It will be observed that the meeting edges of the doors swing laterally and upwardly the door operating mechanism and rock connected to the rock-shaft and to one of the doors, additional connections between said doors for transmitting motion from one to the other, a rock-shaft journaled on one of the doors and provided with means for engaging and locking one'of the doors in its closed position, and connections between shaftfor unlocking the doors just prior to opening the same.

4. In a dump wagon, a box having downv wardly flaringsides and provided with laterally swinging bottom doors inclining upwardly from their meeting edges, said doors having u -turned end pieces ivoted to the ends of t e box at o posite'si es of its longitudinal center, a roe shaft journale'd on the "box, a link eccentrically eonnected to the rock-shaft and to the end piece of one-of the doors, means for transmitting motion from one door to the other, and additional means for locking the doors in their closed position.

'5. In a dump wagon, a dump box having laterally swinging bottom doors curved upwardly from their meeting edges and provided with up-turned end pieces pivoted to the opposite ends of the box niidway between its sides and longitudinal center, means for op'enin and closing the doors, and additional means rought into action by the door '0 er-'- ating means for locking the doors in t eir I I closed position.

6. In a dump wa on, a dump box having I laterally swinging 'ottom'sd'hors provide with end pieces pivoted tothe opposite ends' of'the box between its sides,'mean s for opening and closing the doors, and guides for the 

